722727361 has 4 divisors (see below), whose sum is σ = 723424000. Its totient is φ = 722030724.

The previous prime is 722727347. The next prime is 722727371. The reversal of 722727361 is 163727227.

722727361 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 722727361 - 2⁷ = 722727233 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 722727361.

It is not an unprimeable number, because it can be changed into a prime (722727311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 346761 + ... + 348838.

It is an arithmetic number, because the mean of its divisors is an integer number (180856000).

Almost surely, 2^722727361 is an apocalyptic number.

It is an amenable number.

722727361 is a deficient number, since it is larger than the sum of its proper divisors (696639).

722727361 is a wasteful number, since it uses less digits than its factorization.

722727361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 696638.

The product of its digits is 49392, while the sum is 37.

The square root of 722727361 is about 26883.5890647064. The cubic root of 722727361 is about 897.4112278386.

The spelling of 722727361 in words is "seven hundred twenty-two million, seven hundred twenty-seven thousand, three hundred sixty-one".